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what is passenger DNA ?

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Passenger DNA also known as foreign DNA is a piece of DNA that is isolated from desired organism and inserted into vector for cloning. The passenger DNA contains gene for desired traits to be introduced in the host organism.

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passenger DNA is a fragment of DNA molecule which is enzymatically isolated and cloned. The gene is identified on a genome and pulled out from it either before or after cloning. The cloned foreign DNA fragment expresses normally as in parental cell. Thus, the foreign DNA fragments can be procured from a variety of sources depending on the aims and scope of cloning experiments.
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